A year after he beat Hillary Clinton to the White House, President Donald Trump still hasn’t shed his obsession for his former rival.

Trump tweeted late Wednesday about “crooked Hillary’s emails” following a day of controversial social media activity during which he shared fake news posted by a far-right anti-Muslim group, before charging both NBC and CNN with doing just that.

Later Trump posted a video of a Fox News segment featuring former Intelligence Community Inspector General Charles McCullough. “Had the information (Crooked Hillary’s emails) been released there would have been harm to National Security....” Trump wrote, in part quoting McCullough.

On Tuesday McCullough told Fox he faced “personal blowback” after he accused Clinton of mishandling classified material by using a private server to send and receive tens of thousands of State Department emails during her tenure as Secretary of State.

“There was personal blowback. To me, to my family, to my office,” McCullough said. “I've heard people say 'this is overblown.' I've heard people say 'this is much ado about nothing' Had the information been released, there would have been harm to national security,” he said.

In a March 2016 letter, senior Democrats questioned the Obama appointee's impartiality but the Clinton campaign had dismissed McCullough's warnings in January that year.

McCullough said that when he showed the then Director of National Intelligence (DNI) James Clapper his findings, Clapper said Clinton’s conduct was “extremely reckless.”

In late 2015, a report directly challenged McCullough’s claim that several dozen of Clinton’s emails contained classified material at the highest levels.

An FBI investigation reviewed 30,000 emails Clinton gave to the State Department in 2014. Out of the tens of thousands of emails that Clinton stored on the private server, investigators found “a very small number” had classification markings.

The investigation identified 52 email chains contained classified information when they were sent: Eight of these had top secret information but most did not have classified markings.

None of the emails were hacked or made public but many were eventually published after a Freedom of Information Act request. Trump has called for the remaining emails to be published.

In July 2016, then FBI Director James Comey said the investigation concluded Clinton and her staff were “extremely careless,” but that they committed no wrongdoing worthy of prosecution.

Trump used the email scandal to hammer Clinton during the 2016 election, campaigning on the slogans “lock her up” and “crooked Hillary.”

In July this year Trump called on Attorney General Jeff Sessions to investigate his campaign rival. “Why aren't the Committees and investigators, and of course our beleaguered A.G., looking into Crooked Hillarys crimes & Russia relations?” Trump asked as the Russia investigation probing his campaign’s alleged ties to the Kremlin heated up.

Sessions wrote a letter to the House Judiciary Committee’s chairman this month stating the Department of Justice inspector general is looking at whether there is merit to investigating Clinton, including the FBI’s handling of the email scandal.

During a hearing before the committee a day after sending the letter, Sessions suggested it is unlikely that Clinton will be investigated again.